pysec - pysec-2023-254

pysec-2023-254

Vulnerability from pysec

Published

2023-11-29 19:15

Modified

2024-02-17 07:18

Severity

7.5 (High) - CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling load_pem_pkcs7_certificates or load_der_pkcs7_certificates could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "cryptography",
        "purl": "pkg:pypi/cryptography"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f09c261ca10a31fe41b1262306db7f8f1da0e48a"
            }
          ],
          "repo": "https://github.com/pyca/cryptography",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "3.1"
            },
            {
              "fixed": "41.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1",
        "3.1.1",
        "3.2",
        "3.2.1",
        "3.3",
        "3.3.1",
        "3.3.2",
        "3.4",
        "3.4.1",
        "3.4.2",
        "3.4.3",
        "3.4.4",
        "3.4.5",
        "3.4.6",
        "3.4.7",
        "3.4.8",
        "35.0.0",
        "36.0.0",
        "36.0.1",
        "36.0.2",
        "37.0.0",
        "37.0.1",
        "37.0.2",
        "37.0.3",
        "37.0.4",
        "38.0.0",
        "38.0.1",
        "38.0.2",
        "38.0.3",
        "38.0.4",
        "39.0.0",
        "39.0.1",
        "39.0.2",
        "40.0.0",
        "40.0.1",
        "40.0.2",
        "41.0.0",
        "41.0.1",
        "41.0.2",
        "41.0.3",
        "41.0.4",
        "41.0.5"
      ]
    }
  ],
  "aliases": [
    "CVE-2023-49083",
    "GHSA-jfhm-5ghh-2f97"
  ],
  "details": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.",
  "id": "PYSEC-2023-254",
  "modified": "2024-02-17T07:18:27.688636+00:00",
  "published": "2023-11-29T19:15:00+00:00",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pyca/cryptography/pull/9926"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pyca/cryptography/pull/9926"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2023-49083

Vulnerability from cvelistv5

Published

2023-11-29 18:50

Modified

2024-08-02 21:46

Severity

5.9 (Medium) - cvssV3_1 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

cryptography vulnerable to NULL-dereference when loading PKCS7 certificates

References

URL	Tags
https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97	x_refsource_CONFIRM
https://github.com/pyca/cryptography/pull/9926	x_refsource_MISC
https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/

Impacted products

Vendor	Product
pyca	cryptography

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T21:46:29.207Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
          },
          {
            "name": "https://github.com/pyca/cryptography/pull/9926",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/pyca/cryptography/pull/9926"
          },
          {
            "name": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cryptography",
          "vendor": "pyca",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.1, \u003c 41.0.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "CWE-476: NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-05T01:28:16.238Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
        },
        {
          "name": "https://github.com/pyca/cryptography/pull/9926",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pyca/cryptography/pull/9926"
        },
        {
          "name": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/"
        }
      ],
      "source": {
        "advisory": "GHSA-jfhm-5ghh-2f97",
        "discovery": "UNKNOWN"
      },
      "title": "cryptography vulnerable to NULL-dereference when loading PKCS7 certificates"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-49083",
    "datePublished": "2023-11-29T18:50:24.263Z",
    "dateReserved": "2023-11-21T18:57:30.428Z",
    "dateUpdated": "2024-08-02T21:46:29.207Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-jfhm-5ghh-2f97

Vulnerability from github

Published

2023-11-28 20:46

Modified

2024-02-20 18:14

Severity

5.9 (Medium) - CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

cryptography vulnerable to NULL-dereference when loading PKCS7 certificates

Details

Summary

Calling load_pem_pkcs7_certificates or load_der_pkcs7_certificates could lead to a NULL-pointer dereference and segfault.

PoC

Here is a Python code that triggers the issue: ```python from cryptography.hazmat.primitives.serialization.pkcs7 import load_der_pkcs7_certificates, load_pem_pkcs7_certificates

pem_p7 = b""" -----BEGIN PKCS7----- MAsGCSqGSIb3DQEHAg== -----END PKCS7----- """

der_p7 = b"\x30\x0B\x06\x09\x2A\x86\x48\x86\xF7\x0D\x01\x07\x02"

load_pem_pkcs7_certificates(pem_p7) load_der_pkcs7_certificates(der_p7) ```

Impact

Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability.

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "affected_functions": [
          "cryptography.hazmat.primitives.serialization.pkcs7.load_der_pkcs7_certificates",
          "cryptography.hazmat.primitives.serialization.pkcs7.load_pem_pkcs7_certificates"
        ]
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "cryptography"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1"
            },
            {
              "fixed": "41.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-49083"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-11-28T20:46:46Z",
    "nvd_published_at": "2023-11-29T19:15:07Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nCalling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault.\n\n### PoC\nHere is a Python code that triggers the issue:\n```python\nfrom cryptography.hazmat.primitives.serialization.pkcs7 import load_der_pkcs7_certificates, load_pem_pkcs7_certificates\n\npem_p7 = b\"\"\"\n-----BEGIN PKCS7-----\nMAsGCSqGSIb3DQEHAg==\n-----END PKCS7-----\n\"\"\"\n\nder_p7 = b\"\\x30\\x0B\\x06\\x09\\x2A\\x86\\x48\\x86\\xF7\\x0D\\x01\\x07\\x02\"\n\nload_pem_pkcs7_certificates(pem_p7)\nload_der_pkcs7_certificates(der_p7)\n```\n\n### Impact\nExploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability.",
  "id": "GHSA-jfhm-5ghh-2f97",
  "modified": "2024-02-20T18:14:36Z",
  "published": "2023-11-28T20:46:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49083"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/pull/9926"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pyca/cryptography"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2023-254.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/11/29/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "cryptography vulnerable to NULL-dereference when loading PKCS7 certificates"
}

Action not permitted

pysec-2023-254

Vulnerability from pysec

cve-2023-49083

Vulnerability from cvelistv5

ghsa-jfhm-5ghh-2f97

Vulnerability from github

Summary

PoC

Impact

Tags